In load-balanced queues, only items assigned to you appear in your inbox. If you have administrative privileges, you can see other items as well.
To view all unassigned items in a load-balanced queue, click Unassigned Items on the Queue Administration ribbon.
To view all items in a load-balanced queue, click Show All Items on the Queue Administration ribbon. This displays all items in the queue regardless of their assignment.
To see only items assigned to you, click Assigned To Current User on the Queue Administration ribbon.